"Dungiven Formation"@en . "1000.0"^^ . "stable"@en . "Dungiven Formation [Duplicate 2: use DUNN]"@en . "Unknown"@en . . "Metalimestone, metamorphic rock, psammite, quartzite and schist with subsidiary graphitic semipelite, pelite and semipelite and trace pillowed basalt lava. Stratified bedrock. Occurs onshore. Deposited during the Neoproterozoic Era (Precambrian) (1000-541 Ma BP)."@en . "Intercalated metalimestone, basic metavolcanics, graphitic and micaceous schist, quartzites and psammites."@en . "Not exposed."@en . "DUNN"@en . "Dungiven Formation"@en . "Dungiven Formation [Duplicate 1: use DUNN]"@en . . . "Dungiven Limestone [Obsolete: use DUNN]"@en . "541.0"^^ . . "Base of major amphibolitic green beds (Glenga Amphibolite Member) at base of Dart Formation."@en . . . . . . . .